📇 YARONGTECH Black MIFARE Classic 13.56MHz RFID Card Review

Just received these for testing with an RF project I'm working on and half of them have noticeable problems with their design. Looking through them in bright light, I can clearly see the debris and broken tracks in the distressed specimens. The best from this deck still can't match the responsiveness of other cards I have.

Not entirely sure of my intentions except as an amateur with these blank cards. My question is how to print them? I know how to download an NFC app to create an NFC tag (but don't know how to print a card?). Searching the web seems useless to figure out how to print the card (what kind of printer do I need?) Ok enough about that, the product is what is advertised, just more of a template with no instructions?

I have several door locks that use Mifare Classic credentials and other types of credentials. I currently have a variety of credentials so I know my locks are working great. These cards are NOT fully compatible with mifare classic 1k! Someone else asked if the cards were writable and the answer was no. This indicates that these cards cannot support the encrypted communications included in the Mifare specification. DO NOT ATTEMPT TO USE THEM FOR ACCESS CONTROL. If you use unencrypted…